Lubricant



Patented Nov. 4', 194.

SVEN JOHAN NORDSTROM, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOB, BY DIRECT AND IMESNE ASSIGNMENTS, '10 MERGO NO'RDSTROM VALVE COMPANY, OF SAN FRANCISCO, CALIFORNIA, A CORPORATION OF DELAWARE.

LUBRICANT.

R0 Drawing.

To all whom it may concern:

Be it known that 1, SEN JOHAN NonnsrRoM, a subject of the King of Sweden, *and a resident of San Francisco, in the county of San Francisco and State 'of California, have invented certain new and useful Improvements in Lubricants, of which the following is a specification.

The invention relates to an improvement in lubricants, and more particularly to an improvement in compounds for lubricating relatively movable parts such as valves and the like which are subject to the effects of steam or. high temperatures.

The object of the invention is to produce. a lubricating compound which will preserve its body or lubricating qualities for a reasonable length of time when subjected to high temperatures and high pressure. To this end, the invention consists in the improved lubricant hereinafter described and particularly -pointed out in the appended claims.

In preparing my improved lubricant I use a mixture of a water-insoluble calcium soap and a high flash mineral oil. Calcium soaps as heretofore prepared 1 found to be unsuitable for the purpose, and accordingly I have prepared a new calcium soap for use in making the improved lubricant. The new calcium soap imparts to the lubricating compound the property of keeping its body or lubricating qualities while in the presence of high temperatures.

The calcium soap isprepared by taking substantially. 780 grams of vegetable oil, preferably castor oil, and 220 grams of vegetable wax, preferably carnauba wax, and melting them together, In a separate vessel 500 grams of quicklime is stirred into seven liters of water and brought to a boil. The melted castor oil and carnauba wax are poured carefully into the boilin lime water so as to prevent the mixture rom boiling quicklime.

SVEN JOHAN NORDSTROM.

Application filed August 28, 1922. Serial No. 584.864.

over. The mass is then boiled for thirty minutes and is thoroughly stirred from time to time. After the mixture has settled, the water is poured oil, and the residue is brought to its melting point. The mass is afterward allowed to cool and is then broken into small pieces of about one-quarter inch mesh. The calcium soap as thus formed is then ground into small particles. To facilitate the grinding of the soap it is mixed with one-sixth of its weight of flake The calcium soap composed as hot plate and stirred constantly until it is completel melted.

The In ricating compound, as thus prepared, is then cooled and formed into sticks, as with a grease gun, and the sticks rolled in graphite. The improved lubricating compound is a stiff paste at 400 F. At 500 F. it begins to flow, and at 600 F. it has the consistency of thick molasses. It will thus be recognized that the lubricant is adapted for use in the presence of steam and high temperatures generally.

Having thus described the invention what I claim as new 1s:

1. A lubricating compound comprising a mineral oil and a calcium soap made from castor 011, carnauba wax and quickhme.

2. A lubricating compound comprlsmg a mixture of mineral oil and a calcium soap made from vegetable oil, vegetable wax and 

